The NFL is lucky to have obvious difference-making talents such as Todd Gurley and Amari Cooper arrive on the scene this season.

After witnessing Odell Beckham's brilliant 2014 debut, it's easy to forget there are years in which the top rookie enjoys a relatively pedestrian season -- such as Matt Ryan in 2008 or Sam Bradford in 2010.

Two months into their careers, though, Gurley and Cooper are already among the best at their respective positions.

Le'Veon Bell was threatening to join J.J. Watt and Rob Gronkowski as the gold standard at his position, head and shoulders above the crowd. Gurley's emergence now leaves open the question of which young back is a better building block.

Cooper is the rare receiver with explosiveness after the catch as well as downfield tracking ability. How impressive has he been? NFL Media analyst Daniel Jeremiah said this week that he would take Cooper over Beckham, due to the rookie's durability edge.

2. Amari Cooper, Oakland Raiders wide receiver: Cooper is the first rookie since Mike Ditka in 1961 with three 100-yard performances in his first six career games. Among receivers with at least 25 targets, he ranks first in yards after contact (302) and yards after contact per reception (9.2), per Pro Football Focus.

5. Stefon Diggs, Minnesota Vikings wide receiver: After three career games, Diggs leads the entire NFL in yards per route run, per Pro Football Focus, while averaging 108 yards per game. He has the route-running chops of a six-year veteran.

7. Eric Kendricks, Minnesota Vikings linebacker: The second-round linebacker picked up NFL Defensive Rookie of the Month honors after recording four sacks in the last three weeks. He's shown a knack for blitz timing under Mike Zimmer's tutelage.

8. Henry Anderson, Indianapolis Colts defensive end:Mark Ingram averaged 10 yards per carry against a Colts run defense that was supposed to be much improved. As impressive as he was for the first six weeks, Anderson is in danger of dropping off the list with another performance like that one.